Fig. 4A–B.

Graphs of stem subsidence at the cement-bone interface, measured by EBRA, for (A) Series 1 and (B) Series 2 and 3. Cases of intraoperative and postoperative periprosthetic fracture are identified. (A) In Series 1, the extent of stem subsidence at the cement-bone is variable and, in the majority of hips, exceeds 1 mm. (B) In contrast, in Series 2 and 3, the cement-bone subsidence data are more consistent between hips, and for the majority of hips, subsidence was less than 1 mm over the followup period.